Idle problems

[hock]

My 99 likes to idle high on on occassion for no apperent reason. It did the same thing around this time last year so I pull the IAC off and cleaned it, though it really didn't need it but now that its gettin cold again I am having this problem. Now it doesn't happen all the time that is what really trips me up.

Anyone?

 

[SHOZ123]

Check the TPS voltage. With the key on and engine off it should be under 1.0V. Back probe the connector and check the middle wire to a good ground. Ideally .96-.98V is what you want. I use some solid 20 gage wire like found in fluorescent fixtures to back probe with.

 

[tqmx1]

I had the same thing happen today with my 96. Same way always happens after the first rain. The TPS plug must wick just a little bit of moisture on to the pins and cause a little bit of corrosion. I took the plug on and off a few times and after all that put some dielectric grease an the female contacts and then reinserted it.

I was 100 miles from home when it acted up and on the return trip it did not act up once:woohoo::woohoo: